Improvement in boiler-furnaces



UNITED STATESPATENT OFFICE.

JAMES o. MCNEIL, or AKRON, OHIO.

f IMPROVEMENT IN BoiLER-'FURNACE s.

Specification forming part of Letters Patent Dld-219,106, dated September 2, 1879 application filed May 2e, 1879.

To all whom it 'may concern:

Be it known that I, JAMES C. MGNEIL, of Akron, in the county of Summit and Stateof Ohio, have invented certain new and useful Improvements in Boiler-Furnaces; and I do 4hereby declare the following to be a full, clear,

and exactdescription of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in boiler-furnaces; and it consists of the parts and combination of parts hereinafter described and claimed.

In the drawings, Figure l is a longitudinal central section of a boiler and boiler-furnace embodying my improvements. Fig. 2 is a plan view of the boiler.

In the said drawings. A is thc boiler; B, its furnace-space; C, the fire-pot; D, the grate, suspended by links Dl, or by any other suitable support at its rear end, which will permit it to vibrate, and supported at its forward end by suitable mechanism D2, whereby it maybe held up in proper place, may be dropped down sufficiently far to rake away clinkers, or be altogether dumped, as may be desired. Eis the door to the ash-pit.

rIhe lower portion of the upright fuel-magazine F is inclosed by an annular water-jacket,F1, which communicates, by any suitable passage F2, with the boiler. The upper portion of this fuel-magazine is inclosed by the steamchamber F3. F4 is a cover to the magazine.

G is an air-tube, which leadsfrom the exterior of the boiler down through the center of the fuel-magazine, and discharges air into the body of the fuel at or near the base of the magazine, so as to supply a quantity of oxygen at that point sufficient to render the fuel at that point incandescent, so that when the magazine feeds downward it will not throwa mass of raw fuel upon the hot coals and smother them, but will throw out a mass of ignited or incandescent coal.

g is a trap-door, which serves as a valve to shall enter as above described, though I do v not limit myself' in this respect to such a construction, for the pipe might be made of refractory material and rise from beneath the grate, so as to discharge its air at the same point in the body of the coal.

I do not limit myself to any particular construction at the back of the grate, though I prefer to suspend the back portion ofthe grate by suitable links. It might, however, at this point rest upon suitable supports and guides, the object being that there shall be such construction as to permit the grate to be shaken.

So, also, at the front edge of the grate any suitable mechanism may be employed which will support the grate when in use, and which will permit it to be dropped partially down for the purpose of raking out the clinkers, or be dropped altogether for the purpose of dumping. One such construction is shown in Fig. 1, at b.

H is an adjustable cap to s'et over the cover 1 of the magazine. This cap may, by suitable pipe-connection, be connected with the chimney-iiue. A suitable damper, h, may be em" ployed to out oil" any tendency to a draft through the capH when not in use.

The grate mechanism herein shown and described is not claimed in this patent, and the right to make a separate application for patent thereon is hereby reserved.

What I claim is- In a boiler-furnace, the combination, with upright fuel-magazine F and annular waterjacket F1, which ineloses the lower portion of In testimony whereof I have signed my the latter and eommunieates with the boiler, name to this specification in the presence of of steam-chamber F3, which incloses the upper two subscribing Witnesses.

cylinder portion, and pipe G, whose lower extremity discharges air at or near the eylinder- JAMES C. MCNEIL.

base, the main portion of said pipe extending through the cylinder, audits upper extremityy Witnesses:

having Valve-communication with the open ai r, J N0. OROWELL, Jr., Substantially as set forth. 1 WILLARD FBAGKER. 

